--- ray/src/util/rlux.csh	1993/02/25 09:37:04	2.1
+++ ray/src/util/rlux.csh	1994/04/04 17:04:56	2.3
@@ -3,8 +3,8 @@
 #
 # Compute illuminance from ray origin and direction
 #
-if ( $#argv < 2 ) then
+if ( $#argv < 1 ) then
 	echo "Usage: $0 [rtrace args] octree"
 	exit 1
 endif
-rtrace -i+ -dv- -h- -x 1 $argv[*]:q | rcalc -e '$1=47.1*$1+117.2*$2+14.7*$3'
+rtrace -i+ -dv- -h- -x 1 $argv[*]:q | rcalc -e '$1=47.1*$1+117.2*$2+14.7*$3' -u